Freedom Fighters: The Ray tells the origin story of Ray Terrill (Russell Tovey), a man who reluctantly becomes a superhero after he is visited by his dying Earth-X doppelganger. As the light-powered superhero The Ray, Ray fights the Nazi villains of Earth-X, while building up the courage to come out as gay to his parents. The first six-episode season of The Ray debuted late last year.

Season 3 opens with Kara dealing with the loss on Mon-El by focusing her energy on being Supergirl and concentrating on a mysterious new threat; Alex confessing a secret to Maggie; a citizen of National City having a mysterious connection to Kara; Lena making a bold move.